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Compared to standard retrieval tasks, passage retrieval for conversational question answering (CQA) poses new challenges in understanding the current user question, as each question needs to be interpreted within the dialogue context.…

Computation and Language · Computer Science 2022-10-31 Zeqiu Wu , Yi Luan , Hannah Rashkin , David Reitter , Hannaneh Hajishirzi , Mari Ostendorf , Gaurav Singh Tomar

Networked systems are widely applicable in real-world scenarios such as social networks, infrastructure networks, and biological networks. Among those applications, we are interested in social networks due to their complexity and…

Social and Information Networks · Computer Science 2021-06-22 Jiaxin Wu , Supawit Chockchowwat

Despite the critical need to align search targets with users' intention, retrievers often only prioritize query information without delving into the users' intended search context. Enhancing the capability of retrievers to understand…

Computation and Language · Computer Science 2024-02-23 Hanseok Oh , Hyunji Lee , Seonghyeon Ye , Haebin Shin , Hansol Jang , Changwook Jun , Minjoon Seo

The context information such as product category plays a critical role in sequential recommendation. Recent years have witnessed a growing interest in context-aware sequential recommender systems. Existing studies often treat the contexts…

Information Retrieval · Computer Science 2020-01-15 Ke Sun , Tieyun Qian

Session-based recommender systems capture the short-term interest of a user within a session. Session contexts (i.e., a user's high-level interests or intents within a session) are not explicitly given in most datasets, and implicitly…

Information Retrieval · Computer Science 2022-08-22 Sejoon Oh , Ankur Bhardwaj , Jongseok Han , Sungchul Kim , Ryan A. Rossi , Srijan Kumar

Tag recommendation is a common way to enrich the textual annotation of multimedia contents. However, state-of-the-art recommendation methods are built upon the pair-wised tag relevance, which hardly capture the context of the web video,…

Multimedia · Computer Science 2010-03-25 Zhineng Chen , Juan Cao , Yicheng Song , Junbo Guo , Yongdong Zhang , Jintao Li

Conversational recommender systems have attracted immense attention recently. The most recent approaches rely on neural models trained on recorded dialogs between humans, implementing an end-to-end learning process. These systems are…

Information Retrieval · Computer Science 2022-05-26 Ahtsham Manzoor , Dietmar Jannach

Conditor is a software tool which works with textual documents containing historical information. The purpose of this work two-fold: firstly to show the validity of the developed engine to correctly identify and label the entities of the…

Digital Libraries · Computer Science 2016-03-24 Piedad Garrido , Jesus Tramullas , Manuel Coll

Conversational retrieval refers to an information retrieval system that operates in an iterative and interactive manner, requiring the retrieval of various external resources, such as persona, knowledge, and even response, to effectively…

Computation and Language · Computer Science 2024-02-29 Hongru Wang , Boyang Xue , Baohang Zhou , Rui Wang , Fei Mi , Weichao Wang , Yasheng Wang , Kam-Fai Wong

Detecting and identifying user intent from text, both written and spoken, plays an important role in modelling and understand dialogs. Existing research for intent discovery model it as a classification task with a predefined set of known…

Information Retrieval · Computer Science 2019-04-19 Nikhita Vedula , Nedim Lipka , Pranav Maneriker , Srinivasan Parthasarathy

Learning distributed representations of documents has pushed the state-of-the-art in several natural language processing tasks and was successfully applied to the field of recommender systems recently. In this paper, we propose a novel…

Information Retrieval · Computer Science 2017-11-29 Danijar Hafner , Alexander Immer , Willi Raschkowski , Fabian Windheuser

Recommender systems improve access to relevant products and information by making personalized suggestions based on previous examples of a user's likes and dislikes. Most existing recommender systems use social filtering methods that base…

Digital Libraries · Computer Science 2007-05-23 Raymond J. Mooney , Loriene Roy

This thesis tackles the problem of learning efficient representations of complex, structured data with a natural application to web page and element classification. We hypothesise that the context around the element inside the web page is…

Machine Learning · Computer Science 2021-11-09 Cedric Cook

This paper presents a partial solution to a component of the problem of lexical choice: choosing the synonym most typical, or expected, in context. We apply a new statistical approach to representing the context of a word through lexical…

Computation and Language · Computer Science 2007-05-23 Philip Edmonds

We address the task of ranking objects (such as people, blogs, or verticals) that, unlike documents, do not have direct term-based representations. To be able to match them against keyword queries, evidence needs to be amassed from…

Information Retrieval · Computer Science 2017-08-30 Shuo Zhang , Krisztian Balog

We present Contextual Discourse Vectors (CDV), a distributed document representation for efficient answer retrieval from long healthcare documents. Our approach is based on structured query tuples of entities and aspects from free text and…

Computation and Language · Computer Science 2020-02-04 Sebastian Arnold , Betty van Aken , Paul Grundmann , Felix A. Gers , Alexander Löser

We deal with the scenario of conversational search, where user queries are under-specified or ambiguous. This calls for a mixed-initiative setup. User-asks (queries) and system-answers, as well as system-asks (clarification questions) and…

Computation and Language · Computer Science 2022-05-24 Yosi Mass , Doron Cohen , Asaf Yehudai , David Konopnicki

We present a content-based method for recommending citations in an academic paper draft. We embed a given query document into a vector space, then use its nearest neighbors as candidates, and rerank the candidates using a discriminative…

Computation and Language · Computer Science 2018-02-26 Chandra Bhagavatula , Sergey Feldman , Russell Power , Waleed Ammar

Text clustering holds significant value across various domains due to its ability to identify patterns and group related information. Current approaches which rely heavily on a computed similarity measure between documents are often limited…

Information Retrieval · Computer Science 2025-04-09 Laurence Hirsch , Robin Hirsch , Bayode Ogunleye

Citations allow quickly identifying related research. If multiple publications are selected as seeds, specific suggestions for related literature can be made based on the number of incoming and outgoing citation links to this selection.…

Human-Computer Interaction · Computer Science 2024-08-06 Fabian Beck